<?php
Route::set('admin-article-category','admin/article/category(/<id>)(/page-<page>)')->defaults(array(
    'directory'  => 'admin',
    'controller' => 'article',
    'action'     => 'category',
    'id'         => null,
    'page'       => 1
));

Route::set('client-article-category','article/category(/<id>)(/page-<page>)')->defaults(array(
    'controller' => 'article',
    'action'     => 'category',
    'id'         => null,
    'page'       => 1
));